About VaporSafe
VaporSafe® is a partnership between Hartman Environmental Geoscience and Groundswell Technologies, combining over 30 years of vapor intrusion expertise with cutting-edge automated monitoring technology.
Our Expertise
We are world leaders in real-time chemical emissions and odor monitoring — providing Data as a Service (DaaS) solutions for environmental consultants, regulators, agencies, developers, law firms, business owners, farmers, homeowners, and other stakeholders.
Our team has published significant peer-reviewed journal articles, book chapters, national standards, and agency guidance that describe our approach as well as our findings and industry-changing discoveries.
VaporSafe® is accepted by state, federal agencies and international agencies and has been referred to as the “best-in-class” vapor assessment and management option by industry leaders.
Publications
Hosangadi, V., B. Hartman, M. Pound, M. Kram, C. Frescura, B. Shavers, 2017. “High Frequency Continuous Monitoring To Track Vapor Intrusion Resulting From Naturally Occurring Pressure Dynamics”, Remediation, Spring, v.27, no.2, p.9-25.
SourceKram, M. L., B. Hartman, and C. Frescura, 2016. “Vapor Intrusion Monitoring Method Cost Comparisons: Automated Continuous Analytical Versus Discrete Time-Integrated Passive Approaches”, Remediation, Autumn, v.26, no.4, p.41–52, doi:10.1002/rem.21482.
SourceKram, M. L., B. Hartman, and N. Clite, 2019. “Automated Continuous Monitoring and Response to Toxic Subsurface Vapors Entering Overlying Buildings – Selected Observations, Implications and Considerations”, Remediation, v.29, p.31–38.
SourceKram, M. L., B. Hartman, C. Frescura, P. Negrao, and D. Egelton, 2020. “Vapor Intrusion Risk Evaluation Using Automated Continuous Chemical and Physical Parameter Monitoring”, Remediation, v.30, p.65-74.
SourceKram, M. L., B. Hartman, and C. Frescura, 2022. “Simultaneous Monitoring of Volatile Organic Contaminant Concentration and Controlling Factors for Vapor Intrusion Risk Evaluations—Two Select Cases”. Remediation, v.32, issue 4, p.259-272.
SourceKram, M. and Solgi, R., 2025. Empirically-Derived Building-Specific Learning Models for Predicting Occupant Vapor Intrusion Exposures. Remediation, v.35, issue 2: e70016.
Source
Our Team
Dr. Mark Kram
Founder & CTO, Groundswell Technologies, Inc.
PhD in Environmental Science & Management (UCSB), MS in Geology (San Diego State), BS in Chemistry (UCSB). Internationally recognized expert in site characterization, sensor development, and GIS applications. Featured in Forbes; recipient of the NGWA Technology Award and ASTM Committee D18 Technical Editors Award. Active in NGWA, ASTM, and ITRC.
Dr. Blayne Hartman
CEO, Hartman Environmental Geoscience
Nationally recognized vapor intrusion expert with over 30 years of soil gas and 20 years of vapor intrusion experience. Has trained regulatory agencies in 30+ states, EPA regions, DoD, and ASTSWMO; instructor for EPA-OUST, ITRC, API, and ASTM courses. Contributing author and editor to federal and state vapor intrusion guidance documents.
Kristof Van Vooren
CEO, Group Van Vooren (Europe)
Environmental industry veteran since 1993, beginning at family business Laboratories E. Van Vooren. Acquired the family firm and founded multiple environmental remediation and management companies. Holds a Bachelor's in Business Administration and an MBA in International Business.
Tom Wuyts
Team Manager, Terra Engineering & Consultancy NV (Group Van Vooren)
Master in Chemistry cum laude from the University of Antwerp with additional electrochemistry research. Project leader on multimillion-dollar ex-situ and in-situ remediation initiatives; manages soil surveys, risk analysis, asbestos inventories, and air monitoring assessments.
Dr. Paulo Negrão
CEO, Clean Environment Brasil
Civil Engineering degree and PhD in Geosciences from UNICAMP (State University of Campinas, Brasil). Pioneer in 2011 of mobile laboratories for on-site soil vapor and vapor intrusion analysis in Brasil. Princeton Groundwater course instructor; leads VaporSafe Brasil since 2019.
Dane Egelton
Principal Environmental Scientist, CSI Australia Pty Ltd.
15 years of contaminated land investigation experience with a 10-year focus on vapor intrusion methods. Member of the Australian Land and Groundwater Association (ALGA) Vapor and Ground Gas Committee. Certified Environmental Practitioner (No. 1381) and Site Contamination Specialist (No. SC41147).
Clint Hartman
Chemist, Hartman Environmental Geoscience
Primary onsite chemist with advanced knowledge of VaporSafe® equipment and extensive USA and European field experience. Provides technological support, video production, and content creation, drawing on a diverse background in marketing, advertising, and the food industry.
Casey Brownell
Architect, Hartman Environmental Geoscience
Master's of Architecture from Northeastern University (2010, 2012). Licensed Massachusetts architect with a decade of commercial design experience across San Diego, Europe, the UK, and China. Focused on sustainable design, indoor air health, and healthier building materials.
International Resellers
Contaminated Site Investigations (CSI)
Dane Egelton
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Whether you're an environmental consultant, regulator, or operator, we're here to help solve your monitoring challenges.
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